105124404 has 72 divisors (see below), whose sum is σ = 311296608. Its totient is φ = 27303360.

The previous prime is 105124403. The next prime is 105124427. The reversal of 105124404 is 404421501.

It is a happy number.

It is a super-2 number, since 2×105124404² = 22102280632710432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105124403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1659 + ... + 14594.

It is an arithmetic number, because the mean of its divisors is an integer number (4323564).

Almost surely, 2^105124404 is an apocalyptic number.

105124404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105124404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155648304).

105124404 is an abundant number, since it is smaller than the sum of its proper divisors (206172204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105124404 is a wasteful number, since it uses less digits than its factorization.

105124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16285 (or 16276 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 105124404 is about 10253.0192626367. The cubic root of 105124404 is about 471.9556419580.

Adding to 105124404 its reverse (404421501), we get a palindrome (509545905).

The spelling of 105124404 in words is "one hundred five million, one hundred twenty-four thousand, four hundred four".